baber/WOPTO huggingface dataset:
Patent GB-303819-A (GB)
Title: Sustaining helicopter having oscillating blades
IPC: B64C27/43
Filed: 1927-10-07
Abstract: 303,819. Oehmichen, E. Oct. 7, 1927. Divided on 302,752. Screw propellers. - Helicopters with blades which oscillate and which have a cyclical changing pitch are provided with an elongated body oscillating and turning with the blades whereby a variable inclination of the latter causes an incidence change in the blades. Blades 1, 1<1> are mounted on a ring 2 carried by a shaft 6 through an intermediate ring 5. Bars 7, 7<1> are in line with the short axles 3, 3<1> and carry heavy weights 8, 8<1>. Reaction springs 9, 9<1> connect the blades with the shaft. The blades are controlled in the plane of 90‹ to the maximum unbalance as referred to in Specification 272,871. Specification 302,752 also is referred to.
Patent GB-1119234-A (GB)
Title: Composite piezoelectric filter method and means
IPC: H03H9/60
Filed: 1965-06-08
Abstract: 1,119,234. Electromechanical filters. SONUS CORP. 8 June, 1965 [9 June, 1964], No. 24296/65. Heading H3U. [Also in Division H1] A filter comprises two coupling elements, each consisting of two piezo-electric elements 32, 34 joined face to face and polarized along a common axis, the electrical connections of the filter being such that the direction of polarity of both elements is the same. As shown, the elements each comprise ceramic discs bonded by adhesive to either side of a common conductor 36. The discs are axially polarized in the direction indicated on the drawing and connections are made to electrodes on the major faces in the manner shown. The discs may be supported by three pillars 18, 20, 22 extending from a common base-plate 16 and serving respectively as input, output and common earth terminals. The elements are suspended from the posts by means of leads 24, 26, 28a, 28b.
Patent GB-1114091-A (GB)
Title: Improvements in or relating to prefabricated floor structures and to building structures made therewith
Inventor: BOLT HARRY COLLETT
IPC: E04B1/343
Filed: 1965-06-09
Abstract: 1,114,091. Prefabricated buildings. TERRAPIN INTERNATIONAL Ltd. 26 May, 1966 [9 June, 1965], No. 24381/65. Heading E1A. A prefabricated building unit adapted for easy transportation comprises an intermediate floor member having upright frame members hinged thereto at the corners which when pivoted into the vertical position engage a socketed wall member 35. The member 35 has inclined plates 42, 43 to position the lower and upper frame members 11 with a wedging action, see also Fig. 6 (not shown). The floor member has a suspended ceiling 26 of plywood backed with a fire-proofing layer 26. A number of such units may be bolted to-gether. For minor details of floor joists, mode of erection &c., the Specification should be referred to together with Specifications 795975, 901483 and 901484.
Patent GB-812439-A (GB)
Title: Improvements in endless chain conveyors
Inventor: REEVE JOHN EDWIN
IPC: B65G37/00
Filed: 1956-08-09
Abstract: 812,439. Endless chain conveyers. HOPKINS & SONS Ltd., G. Aug. 9, 1957 [Aug. 9, 1956], No. 24441/56. Class 78 (1). In a conveyer of the kind consisting of parallel endless chains a b, on which articles such as bores may be carried, and in which the chains are constructed to be flexible in more than one plane so that they can negotiate a curve, the outer chain b in a curved portion of the conveyer is depressed below the level of the inner chain a by being passed around sprockets f, and is replaced throughout the curved portion by rollers h. The rollers are inclined transversely and are carried in a frame g towards the ends of the curved portion pairs of rollers h1 are provided. The chains are supported throughout their paths on guides c.
Patent GB-431099-A (GB)
Title: Improvements in or relating to spray carburettors for internal combustion engines
IPC: F02M3/05
Filed: 1934-08-24
Abstract: 431,099. Spray carburetters. SCHIMANEK, E., M³egyetem, Budapest. Aug. 24, 1934, No. 24480. Convention date, June 18. [Class 7 (iii)] The fuel or mixture supply to the engine is automatically cut off during overrunning by the back pressure which an air- or gasflow, emerging from a space with approximately constant pressure through a nozzle, &c., into a space in which there is a partial vacuum, exerts on an area disposed in the path of the flow, the partial vacuum varying according to the suction obtaining in the induction pipe. A screen 14, Figs. 4 and 5, which normally deflects air, rushing inwards through a tube 10, into the induction pipe, is moved down when overrunning causes strong suction in the induction pipe and permits the air blast to impinge on the orifice 4 of a fuel byepass 5 to cut off the supply of fuel. The screen 14 is carried by a spring supported lever 22 adapted to be depressed by a plunger 20 associated with a diaphragm 15 exposed at one side to the atmosphere and at the other to the induction pipe. By forming the screen with a curved surface, the wind pressure may accelerate its movement. In another form, an aperture 23<11>, Fig. 11, in the diaphragm 15 is almost closed by a cone 36 on the apertured base of a cylinder 41 which houses a spring pressed piston 39. The increased suction, in displacing the diaphragm enlarges the opening 23<11> and the piston is suddenly pulled down to the position shown where a passage 31 therein connects the pipe 10 and fuel passage 5. Normally these are opposite apertures 32, 32<1> in the piston screened by a plate 41. In the construction of Fig. 16, use is made of the maximum outflow velocity from the atmosphere to the chamber 23 which is attained when the pressure in the chamber is less than 0À53 of that of the atmosphere. Down to this proportion, the increasing velocity of the air counteracts the reduction in pressure : below it, the pressure decreases and actuates a diaphragm 15<1> connected to a valve 59, which isolates the top of the float chamber 56 from the atmosphere, and to a valve 60 which destroys the suction on the idling nozzle 55. In modifications the diaphragm merely closes a valve in the passage 52 from the idling nozzle 55 to the induction pipe or opens that pipe to the atmosphere.
Patent GB-245775-A (GB)
Abstract: 245,775. Oesterreichische Telephon- Fabrik-Akt-Ges. vorm. J. Berliner. Jan. 8, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Feeding webs.-A feeding device for a perforated ribbon, film, &c. comprises a pair of pawls 1, one at each edge of the ribbon 10, pivoted to a reciprocating plate 4 and normally pressed upwards into operative position by coil or other springs 5. During the non-feeding stroke of the plate 4, the pawls are depressed against the action of the springs and slide on the underside of the ribbon &c. until they register with the next pair of perforations. Side guides 7 for the plate 4, and a plate 8 having slots 9 to guide the pawls, are provided.
Patent GB-616011-A (GB)
Title: Improvements in steam generating and superheating units
IPC: F22G5/20
Filed: 1946-08-19
Abstract: 616,011. Water-tube steam boilers. BABCOCK & WILCOX, Ltd. Aug. 19, 1946, No. 24599. Convention date, Aug. 25, 1945. [Class 123(ii)] In a steam boiler comprising horizontally disposed upper and lower drums 28, 29, Figs. 1 and 2, connected by a bank of upright steam generating tubes 31 located together with a superheater 41 in a space 18 laterally adjoining a combustion chamber 17, as described for example in Specification 433,834, a combustion gas by-pass 48 is provided between the superheater and the upper drum and is adapted to be closed to a selected degree by a baffle 47 supported by some of the said tubes 31. As shown, the space 18 is divided by transverse baffles 23, 24 to provide seriallyconnected passes 25, 26, 27, and in the first or rear pass 25 the tubes 31 are in two groups 37, 38 defining a superheater space therebetween, the two inner rows 38c of tube group 38 being bent forwardly and upwardly in a reverse curve above the upper end of the superheater to be jointed with the drum 28 adjacent the tubes of the group 37 and to encircle the baffle 47. The latter is preferably formed of one or more horizontal rows of readily removable tiles, each tile having a length equal to twice the tube pitch of the rows 38c with adjacent tiles making joint at a tube and the lowest row of tiles abutting against bracket or stop members 49, clamps, etc. individually welded or otherwise secured to successive tubes in the inner row 38c. The superheater is supported in known manner by means interposed between the headers 42, 43 thereof and the lower drum 29, and the said headers are protected by a baffle 46 which extends from the drum 29 and defines the lower boundary of the passage available for gas flow over the superheater. A modified construction is shown in Fig. 4.
Patent GB-1111847-A (GB)
Title: Mailing piece separator
IPC: B07C3/00
Filed: 1966-06-02
Abstract: 1,111,847. Sorting apparatus. CHESHIRE Inc. 2 June, 1966 [2 June, 1965], No. 24667/66. Heading G4M. Address labels are fixed to articles to be mailed in a labelling machine, the labelled articles being arranged in a shingled array, and when a change of town address occurs, a mark in a predetermined position on a label is photo-electrically sensed as the labels are fed to the labelling machine, a pin is set in a rotating delay device whereby when the article bearing the marked label reaches the shingled array, a normally operative stop is removed so that this article takes up an offset position relative to the shingled array. The arrangement enables the operator to easily distinguish when a change of town address has occurred and to collect batches of articles for bulk mailing. In a modified system, the delay device, instead of operating the stop, actuates a binding machine to bind the batch of articles. The presence of a mark in a second predetermined position may be used to stop the labelling machine and transport mechanisms, e.g. to enable a printing plate to be changed.
Patent GB-1458644-A (GB)
Title: Compositions and process for blackening steel
IPC: C23C22/62
Filed: 1975-06-09
Abstract: 1458644 Blackening metal surfaces MITCHELL BRADFORD CHEMICAL CO 9 June 1975 [24 Oct 1974] 24692/75 Heading C7U A dry dichromate free composition suitable for use in aqueous solution for blackening iron and steel including hardened steel and stainless steel contains in parts by weight 50-90 alkali metal hydroxide, 0À1-50 alkali metal nitrate, 0À1-50 alkali metal nitrite, 0À001-20 of a cyclic S containing compound selected from 2-mercaptobenzothiazole, benzothiazyl disulphide and 2-mercaptoimidazoline, 0À001-20 of molybdic acid and/or alkali metal molybdate, 0-20 wetting agent and 0-20 of a metal salt of a sulphonated dye. The aqueous solution may contain 2-10 pounds per gallon of the composition and blackening is effected by immersion for 10-25 minutes in the solution at 255-325‹F. The blackened steel is rinsed in cold water and dried or dipped in oil or wax. A preferred wetting agent is alkyl naphthalene sodium sulphonate and the sulphonated dye salts may be the sodium salts of diphenyl-dis-azo-bis-8-amino-1-naphthal-3; 6-disulphonic acid; 8-anilino-5-(p-hydroxy anilino) -1-naphthalene sulphonic acid and sulphonated anthraquinone vat dyes.
Patent GB-434629-A (GB)
Title: Improvements in window sashes
IPC: E05D13/00
Filed: 1934-08-28
Abstract: 434,629. Hinged sliding window frames. ROWE BROS. & CO., Ltd., Pall Mall, and WORDLEY, S. H., Window Casement Factory, Banastre Street, both in Liverpool. Aug. 28, 1934, No. 24714. [Class 20 (iii)] Sliding sashes are connected to or hinged or pivoted on sliding stiles of bulb-headed shape d engaging recessed keyhole-shaped guide grooves b in the frame or in a metal member attached thereto. The guide and guide groove are preferably extruded from delta metal.
Patent GB-813571-A (GB)
Title: Improvements relating to screw-threaded fasteners and drivers therefor
IPC: B25B15/00
Filed: 1955-08-29
Abstract: 813,571. Screwdrivers. GENERAL AMERICAN TRANSPORTATION CORPORATION. Aug. 29, 1955 [Aug. 30, 1954], No. 24745/55. Class 61. [Also in Group XXV] A screwdriver 1 has a cruciform end 2 comprising driving faces 211 inclined at an angle of up to about 5 degrees to the driver axis 8 for engagement with a complementary recess 19 in a fastener 10, and lagging faces 22<SP>1</SP> which may be parallel to the driving faces. The end may carry a locating tip 9 for engagement with a pocket 12 at the base of the fastener recess.
Patent GB-1206375-A (GB)
Title: Arc tubes
Inventor: WESTON ROBERT FREDERICK
IPC: H01J61/04
Filed: 1968-05-23
Abstract: 1,206,375. Metal-vapour lamp. THORN LIGHTING INDUSTRIES Ltd. 23 May, 1968 No. 24746/68. Heading H1D. Heat loss from the end portions 18 of an arc tube 11 is reduced by a ceramic shield 16a, 16b mounted on each pinch seal 12. The two parts of each shield are located by recesses 21, 24 and 25 which are engaged by projections 19, 22 and 23 on the seal, and are held together by a clip 30 sprung into slots 26. Recesses 17 of the shield are slightly larger than the rounded end portion 18 of the tube to provide a clearance for the prevention of chemical action, and the shield does not cover the whole length or the edges of the seal 12 so that this may be cooled. The tube is filled with mercury, argon at a pressure of 20 to 25 torr, thorium, scandium, iodine and sodium iodide.
Patent GB-1122905-A (GB)
Title: Developing process for colour photography
IPC: G03C7/36
Filed: 1966-06-03
Abstract: Compounds of formula <FORM:1122905/C2/1> wherein X is halogen, alkyl, trifluoromethyl, alkoxy, aryloxy or acylamino (e.g. carboxylic amido or sulphamino) group, Y is hydrogen or a group listed under X, and Z is a halogen or hydrogen atom, are used as photographic colour couplers (see Division G2-G3). 2-Methyl-benzoyl-aceto-(21-chloro)anilide is prepared by heating equimolar amounts of o-chloroaniline and the ethyl ester of 2-methyl-benzoylacetic acid; the corresponding 2-methyl-21 - fluoro, 4 - methyl - 21 - fluoro, 2 - methyl -  21 - ethoxy, 2 - methyl - 41 - (411 - toluenesulphamido) and 3 - methyl - 21 - methoxy derivatives are prepared similarly.
Patent GB-977821-A (GB)
Title: Heat-curable coating compositions
IPC: C08L63/02
Filed: 1963-06-24
Abstract: A copolymer having ester-linked hydroxybutyl moieties is the partial esterification product of 1, 2-butylene oxide and a single-phase solution polymerization product of a plurality of alpha monoolefinically unsaturated monomers at least ternary in composition consisting essentially of (a) a monovinyl monocyclic aromatic hydrocarbon, (b) at least one neutral ester of acrylic or methacrylic acid with a saturated aliphatic monohydric alcohol compound of carbon, hydrogen and oxygen atoms, and (c) at least one monoolefinically unsaturated carboxylic acid having a terminal methylene group, the respective proportions of butylene oxide and carboxylic acid being sufficient to provide the copolymer with 10 to 40% by weight of hydroxybutyl ester and free acid moieties sufficient to give an acid number of 5 to 30.  The exemplified monomers are (a) styrene, (b) ethyl acrylate and methyl methacrylate, (c) acrylic, methacrylic and itaconic acids.  The esterification reaction is preferably carried out in solution in the presence of as a catalyst quaternary ammonium compound that gives an insoluble precipitate with phosphoric acid.  After the reaction phosphoric acid is added and the catalyst filtered off. The polymer solution may then be mixed with an epoxyhydroxy polyether condensate and at least one heat curable aminoplast and the composition coated on a metal substrate and cured. The composition may contain wax and pigment. Specifications 483,399 and 686,234 are referred to.ALSO:Sheet metal, e.g. sheet steel, is coated by a solution of a composition comprising a partially hydroxybutylated copolymer of styrene, at least one neutral ester of acrylic or methacrylic acid with a saturated aliphatic monohydric alcohol composed of carbon, hydrogen and oxygen atoms, and at least one monoolefinically unsaturated carboxylic acid having a terminal methylene group, an epoxyhydroxy polyether condensate, and a heat-curable aminoplast which is a condensate of formaldehyde with melamine, benzoguanamine, melamine with toluenesulphonamide, and urea. Other ingredients such as pigments (e.g. titanium dioxide) and waxes may be added.  The sheet metal may be previously primed or the composition may be applied without a special primer; two coats may be applied.  Specifications 483,399 and 686,234 are referred to.
Patent GB-1421934-A (GB)
Title: Propylene oxide recovery
IPC: C07D301/32
Filed: 1973-05-25
Abstract: 1421934 Propylene oxide BADISCHE ANILIN- & SODA-FABRIK AG 25 May 1973 [26 May 1972] 25106/73 Heading C2C The invention comprises a process for the recovery of propylene oxide from a liquid mixture which additionally contains acetaldehyde, methyl formate and 2-methylpentane, there being at least 4 parts by weight of methyl formate to each 1 part by weight of 2-methylpentane, wherein the mixture is supplied to the middle portion of a distillation column and distilled therein, and propylene oxide is withdrawn at the base of the column.
Patent GB-357734-A (GB)
Title: Improvements in or relating to buttons
IPC: A44B1/30
Filed: 1930-08-22
Abstract: 357,734. Two-part buttons. TRœB, F., Rorschach, Switzerland. Aug. 22, 1930, No. 25174. [Class 43.] In a two - part button comprising a head part 1 and a screw part 2 between which the material S is gripped, for the purpose of firmly gripping the material there is provided on the head part one or more circular projections 1b concentric with the screw shank and engaging in a corresponding recess or recesses 2b in the screw part, the screw part having a transverse slot 2a and means being provided for the suspension of a loop of the underwear. The means for suspending a loop of the underwear may comprise a springy wire hook 4 inserted in a groove 2c in the screw part. In the modification shown in Fig. 6, a sheet metal hook 12 is connected to the screw part 11, the hook having an annular groove 12a into which extends a circular projection 10a of the head part 10. The edge of the head part may be serrated.
Patent GB-615958-A (GB)
Title: Improvements relating to founding metals
IPC: B22C9/02
Filed: 1946-08-23
Abstract: 615,958. Foundry plant. FASSOTTE, P. C. Aug. 23, 1946, No. 25248. [Class 83 (i)] Drying moulds.-Foundry moulds are transported first to a section where they are dried by hot gases and then to sections where the metal is poured and the castings knocked out. There may be a number of parallel tracks 1, 2, 3, 4 along each of which moulds 5, of which only one is shown, pass continuously from a station M where the moulds are made, through stations CO, CL, D, and C, where the moulds are cored, closed, dried and charged with molten metal, to a station K where the castings are knocked out. In a modification the stations CO and CL are arranged after the station D, as shown along track 3. The tracks may each comprise a driven conveyer or an inclined roller track down which the moulds are pushed by hand. The moulds are dried in the open, partly open, or closed position by hot air supplied by flexible pipes 15, 16, Fig. 3, valves 13, 14, mains 9, 10, heater 8, and fan 7. The temperature and volume of hot air supplied may be controlled automatically. The products of combustion may be mixed with the air unless they include dust.
Patent GB-1272514-A (GB)
Title: Process for the esterification of tertiary aliphatic alcohols
IPC: C11B9/00
Filed: 1970-05-26
Abstract: 1,272,514. Unsaturated esters. SOC. DES USINES CHIMIQUES RHONE-POULENC. 26 May, 1970 [26 May, 1969], No. 25329/70. Heading C2C. Esters of saturated or unsaturated aliphatic acids and tertiary aliphatic alcohols containing a vinyl group with the ethylenic double bond between the α-# positions to the tertiary carbon atom, are prepared by heating the alcohol with a molor excess of saturated or unsaturated aliphatic acid anhydride (C 4-12 ) at a temperature and pressure to distil the acid formed and excess anhydride from the mixture, and separating the ester from the remaining alcohol by fractional distillation. The alcohol may be where R represents a saturated or unsaturated aliphatic radical (1-10 C), R 1  and R 2  represent a saturated or unsaturated aliphatic radical (1-8 C) and R 2  may be hydrogen, a R 1  and R 2  may together form a tri- or tetra-methylene ring, e.g. linalol. The anhydride may be acetic, propionic, isobutyric, valeric or isovaleric anhydride and an esterification catalyst such as an alkali metal carboxylate, phosphoric acid, para toluene sulphonic acid and zinc chloride may be present. Examples describe the preparation of linalyl acetate, isobutyrate and propionate and of 3-methyl-non-1-en-3-yl acetate.
Patent GB-1017856-A (GB)
Title: Apparatus for measuring the load required to deflect a resilient sealing strip
Inventor: ZIEROLD WALTER
IPC: G01L1/00
Filed: 1964-06-19
Abstract: 1,017,856. Testing resilient materials. FORD MOTOR CO. Ltd. June 19, 1964, No. 25409/64. Heading G1S. Apparatus for use in measuring the load required to deflect a resilient sealing strip to a predetermined dimension, comprises an electromagnet, a part mounting the sealing strip, a movable part which when a progressively varying current is supplied to the electromagnet is moved by the electromagnet so as to progressively deflect the sealing strip, and a detector device which is operative, when the sealing strip is deflected to a predetermined dimension, to terminate increase in current through the electromagnet. As shown in Figs. 1 and 3, the solenoid housing 1 supports electromagnets 3 having coils 13 situated in air gaps 5. A spindle 7 extends through the centre of the magnets 3, its screw threaded end 15 supports the test head comprising a platen 21, pressure feet 23 bearing screws 25 positioned adjacent microswitches MS2-MS4. Sealing strips 36 are carried by slides 35 and positioned beneath the pressure feet. In use, the current is increased, the circuit being described with reference to Fig. 5 of the drawings (not shown) until, due to displacement of the shaft 7 microswitches are actuated to de-energize the relay means. Two circuits are employed, one of which displaces the coils and the other of which balances the weight of the movable parts of the apparatus; e.g. the coils 13,formers 11, spindle 7 and movable part of the test head 17.
Patent GB-221660-A (GB)
Title: Improvement connected with winding engines
IPC: B66D5/00
Filed: 1923-10-12
Abstract: 221,660. Bell, W. T., and Perry, F. B. Oct. 12, 1923. Winding-gear for collieries and the like; driving- gear; regulating and control-transmitting gear.- Creeping is prevented when a winding drum is de-clutched from its shaft and is held only by the brakes, as for instance in changing levels, by pawl-and-ratchet gear interconnected with this clutch. Ratchet teeth A on the drum are adapted to be engaged by a pawl E pivoted on a fixed bracket D and connected by a shaft H and arms J to the clutch member K, which connects the drum to the shaft so that when the clutch is disengaged the pawl engages the ratchet teeth and vice versa.